4 bit adder. Took me a few evenings this week to put together. Im quite happy that it worked first try without any bugs. Constructive criticism is encouraged.
Looks great! It looks like you might have watched my video :)
Not knowing the schematic, is there a specific reason you have those yellow traces broken out to the left? Looks like you could have done them single wires.
De obfuscation and pin hole crowding. I was struggling to fit the wires and see my pin holes so I moved the 4 wires that would have been on top of eachother over to make room for the rest of the wiring.
Ah. My only suggestion then would be to reduce the likelihood of errors by just combining each pair of black wires with its yellow wire, so it's one continuous wire. It could still follow the same route and keep your main section less crowded, but there'd be fewer connections to worry about. And you could hold them there with little jumpers like you did in the top right section.